31371990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{313}}^1$

素因数の和:593

約数の個数: 64

約数和(自身を含む): 81660096

約数和(自身を除く): 50288106

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 257, 313, 390, 514, 626, 771, 939, 1285, 1542, 1565, 1878, 2570, 3130, 3341, 3855, 4069, 4695, 6682, 7710, 8138, 9390, 10023, 12207, 16705, 20046, 20345, 24414, 33410, 40690, 50115, 61035, 80441, 100230, 122070, 160882, 241323, 402205, 482646, 804410, 1045733, 1206615, 2091466, 2413230, 3137199, 5228665, 6274398, 10457330, 15685995, 31371990]

約数ペア:

[(1, 31371990), (2, 15685995), (3, 10457330), (5, 6274398), (6, 5228665), (10, 3137199), (13, 2413230), (15, 2091466), (26, 1206615), (30, 1045733), (39, 804410), (65, 482646), (78, 402205), (130, 241323), (195, 160882), (257, 122070), (313, 100230), (390, 80441), (514, 61035), (626, 50115), (771, 40690), (939, 33410), (1285, 24414), (1542, 20345), (1565, 20046), (1878, 16705), (2570, 12207), (3130, 10023), (3341, 9390), (3855, 8138), (4069, 7710), (4695, 6682)]